This Snap-on circuit tester is a reliable tool for testing electrical components in vehicles. It features a digital display and a USB plug-in for easy and efficient testing. The tester is designed for 12V systems and is perfect for use with diagnostic equipment and tools. The brand, Snap-on, is known for its high-quality tools, and this circuit tester is no exception. Its manufacturer part number is EECT402USB, and it falls under the categories of vehicle parts and accessories, garage equipment and tools, and diagnostic equipment and tools. With this tester, technicians can easily diagnose and repair electrical issues in vehicles.